Someone with a GT35R..opinions.

[SlowWhite]

My set up at the time.
Stock 7 bolt Block
ARP Head Studs
Copper Sprayed Stock Mitsu HeadGasket (non-metal)
K&N Filter w/2G Adaptor
Forced Performance 4" Intake Pipe
Turbonetics T3/T4 Exhaust Manifold
PTE T3/T4 GT3561 with "S" Cover .63 A/R
Custom 2.5" Short Route I/C piping
Apexi Skyline GTR FMIC
Blitz BOV
1G Throttle Body
Magnus 2G Sheet Metal Intake Manifold
HKS 264/272 Cams
FIC 850cc injectors
Tial 38mm Waiste Gate
1.5" Custom Dump Tube Routed back into exhaust
3" Custom Downpipe
3" Apexi N1 Exhaust
Eprom ECU (Socketed)
DSMLINK V2
Walboro 255LP (Rewired)
Act 2600
2x10" Slim Line Fans (1000cfm ea)
Extreme Manual Boost Control.

And a whole lot of Show and Stereo stuff but since you only asked for performance.

403whp, 22psi 92oct (climbing up to 25psi from 7K-8K)
456.7whp, 25psi C16 etc as previously stated by Matt.

18psi went 12.173@113mph, 92 oct and CrankWalked Motor
20psi went 12.2@116mph, " " " "

about 2 weeks later the bearing finally went. Never did get a chance to full pump gas boost, or Race Gas.

But I have a full build being done as we speak. But although the motor will be complete I'll still be about 2 months out on everything else I want to do. My goal is to have it ready for my Brothers wedding June 4th. So I can bring it with.